Note 2 - Selected Balance Sheet Data - Changes in Carrying Amount of Goodwill (Details) $ in Thousands  | 
9 Months Ended | 
|---|---|
| 
 Mar. 31, 2018  
USD ($) 
 | |
| Beginning balance | $ 579,026 | 
| Acquisitions (Note 3) | 27,799 | 
| Currency translation | 3,842 | 
| Ending balance | 610,667 | 
| Biotechnology [Member] | |
| Beginning balance | 254,930 | 
| Acquisitions (Note 3) | 27,686 | 
| Currency translation | 3,416 | 
| Ending balance | 286,032 | 
| Protein Platforms [Member] | |
| Beginning balance | 220,826 | 
| Acquisitions (Note 3) | |
| Currency translation | 454 | 
| Ending balance | 221,280 | 
| Diagnostics [Member] | |
| Beginning balance | 103,270 | 
| Acquisitions (Note 3) | 113 | 
| Currency translation | (28) | 
| Ending balance | $ 103,355 | 
| X | ||||||||||
- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
  | 
| X | ||||||||||
- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
  | 
| X | ||||||||||
- Definition Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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| X | ||||||||||
- Details 
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- Details 
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- Details 
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